/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkEllipseArcSource.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkEllipseArcSource - create an elliptical arc
// .SECTION Description
// vtkEllipseArcSource is a source object that creates an elliptical arc
// defined by a normal, a center and the major radius vector.
// You can define an angle to draw only a section of the ellipse. The number of
// segments composing the polyline is controlled by setting the object
// resolution.

#ifndef vtkEllipseArcSource_h
#define vtkEllipseArcSource_h

#include "vtkFiltersSourcesModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class VTKFILTERSSOURCES_EXPORT vtkEllipseArcSource : public vtkPolyDataAlgorithm
{
public:
  static vtkEllipseArcSource *New();
  vtkTypeMacro(vtkEllipseArcSource, vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Set position of the center of the ellipse that define the arc.
  // Default is 0, 0, 0.
  vtkSetVector3Macro(Center, double);
  vtkGetVectorMacro(Center, double, 3);

  // Description:
  // Set normal vector. Represents the plane in which the ellipse will be drawn.
  // Default 0, 0, 1.
  vtkSetVector3Macro(Normal, double);
  vtkGetVectorMacro(Normal, double, 3);

  // Description:
  // Set Major Radius Vector. It defines the origin of polar angle and the major
  // radius size.
  // Default is 1, 0, 0.
  vtkSetVector3Macro(MajorRadiusVector, double);
  vtkGetVectorMacro(MajorRadiusVector, double, 3);

  // Description:
  // Set the start angle. The angle where the plot begins.
  // Default is 0.
  vtkSetClampMacro(StartAngle, double, -360.0, 360.0);
  vtkGetMacro(StartAngle, double);

  // Description:
  // Angular sector occupied by the arc, beginning at Start Angle
  // Default is 90.
  vtkSetClampMacro(SegmentAngle, double, 0.0, 360.0);
  vtkGetMacro(SegmentAngle, double);

  // Description:
  // Divide line into resolution number of pieces.
  // Note: if Resolution is set to 1 the arc is a
  // straight line. Default is 100.
  vtkSetClampMacro(Resolution, int, 1, VTK_INT_MAX);
  vtkGetMacro(Resolution, int);

  // Description:
  // Set/get the desired precision for the output points.
  // vtkAlgorithm::SINGLE_PRECISION - Output single-precision floating point,
  // This is the default.
  // vtkAlgorithm::DOUBLE_PRECISION - Output double-precision floating point.
  vtkSetMacro(OutputPointsPrecision, int);
  vtkGetMacro(OutputPointsPrecision, int);

  // Description:
  // Set the ratio of the ellipse, i.e. the ratio b/a _ b: minor radius;
  // a: major radius
  // default is 1.
  vtkSetClampMacro(Ratio, double, 0.001, 100.0);
  vtkGetMacro(Ratio, double);

protected:
  vtkEllipseArcSource();
  ~vtkEllipseArcSource() {}

  int RequestData(vtkInformation *, vtkInformationVector **,
    vtkInformationVector *);

  double Center[3];
  double Normal[3];
  double MajorRadiusVector[3];
  double StartAngle;
  double SegmentAngle;
  int Resolution;
  double Ratio;
  int OutputPointsPrecision;

private:
  vtkEllipseArcSource(const vtkEllipseArcSource&);  // Not implemented.
  void operator=(const vtkEllipseArcSource&);  // Not implemented.
};

#endif
